 /*******************************************************************************
  * Copyright (c) 2000, 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.update.standalone;

 import java.net.MalformedURLException ;
 import java.net.URL ;
 import java.util.HashMap ;

 import org.eclipse.update.core.Utilities;
 import org.eclipse.update.internal.core.Messages;
 import org.eclipse.update.internal.core.UpdateCore;
 import org.eclipse.update.internal.mirror.MirrorCommand;

 /**
  * This class parses the command line arguments for update standalone commands
  * <p>
  * <b>Note:</b> This class/interface is part of an interim API that is still under development and expected to
  * change significantly before reaching stability. It is being made available at this early stage to solicit feedback
  * from pioneering adopters on the understanding that any code that uses this API will almost certainly be broken
  * (repeatedly) as the API evolves.
  * </p>
  * @since 3.0
  */
 public class CmdLineArgs {
     private HashMap options = new HashMap ();
     public CmdLineArgs(String [] args) {
 // // default command
 // options.put("-command", "install");

         for (int i = 0; i < args.length - 1; i++) {
             if ("-command".equals(args[i])) { //$NON-NLS-1$
 if (isValidCommand(args[i + 1])) {
                     options.put("-command", args[i + 1]); //$NON-NLS-1$
 i++;
                 } else {
                     StandaloneUpdateApplication.exceptionLogged();
                     UpdateCore.log(
                         Utilities.newCoreException(
                             Messages.Standalone_invalidCmd + args[i + 1],
                             null));
                     return;
                 }
             }

             if (isValidParam(args[i])) {
                 options.put(args[i], args[i + 1]);
                 i++;

             }
             // -to should specify a directory
 // if -to specifies file URL, change it to a directory
 String to = (String ) options.get("-to"); //$NON-NLS-1$
 if (to != null && to.startsWith("file:")) { //$NON-NLS-1$
 try {
                     URL url = new URL (to);
                     options.put("-to", url.getFile()); //$NON-NLS-1$
 } catch (MalformedURLException mue) {
                 }
             }
         }
     }

     private boolean isValidParam(String param) {
         return param.equals("-command") //$NON-NLS-1$
 || param.equals("-version") //$NON-NLS-1$
 || param.equals("-to") //$NON-NLS-1$
 || param.equals("-from") //$NON-NLS-1$
 || param.equals("-featureId") //$NON-NLS-1$
 || param.equals("-verifyOnly") //$NON-NLS-1$
 || param.equals("-mirrorURL") //$NON-NLS-1$
 || param.equals("-ignoreMissingPlugins"); //$NON-NLS-1$
 }

     private boolean isValidCommand(String cmd) {
         if (cmd == null)
             return false;
         else
             return cmd.equals("install") //$NON-NLS-1$
 || cmd.equals("enable") //$NON-NLS-1$
 || cmd.equals("disable") //$NON-NLS-1$
 || cmd.equals("search") //$NON-NLS-1$
 || cmd.equals("update") //$NON-NLS-1$
 || cmd.equals("mirror") //$NON-NLS-1$
 || cmd.equals("uninstall") //$NON-NLS-1$
 || cmd.equals("listFeatures") //$NON-NLS-1$
 || cmd.equals("addSite") //$NON-NLS-1$
 || cmd.equals("removeSite"); //$NON-NLS-1$
 }

     public ScriptedCommand getCommand() {
         try {
             String cmd = (String ) options.get("-command"); //$NON-NLS-1$
 if (cmd == null)
                 return null;
             if (cmd.equals("install")) //$NON-NLS-1$
 return new InstallCommand(
                     (String ) options.get("-featureId"), //$NON-NLS-1$
 (String ) options.get("-version"), //$NON-NLS-1$
 (String ) options.get("-from"), //$NON-NLS-1$
 (String ) options.get("-to"), //$NON-NLS-1$
 (String ) options.get("-verifyOnly")); //$NON-NLS-1$
 else if (cmd.equals("enable")) //$NON-NLS-1$
 return new EnableCommand(
                     (String ) options.get("-featureId"), //$NON-NLS-1$
 (String ) options.get("-version"), //$NON-NLS-1$
 (String ) options.get("-to"), //$NON-NLS-1$
 (String ) options.get("-verifyOnly")); //$NON-NLS-1$
 else if (cmd.equals("disable")) //$NON-NLS-1$
 return new DisableCommand(
                     (String ) options.get("-featureId"), //$NON-NLS-1$
 (String ) options.get("-version"), //$NON-NLS-1$
 (String ) options.get("-to"), //$NON-NLS-1$
 (String ) options.get("-verifyOnly")); //$NON-NLS-1$
 else if (cmd.equals("search")) //$NON-NLS-1$
 return new SearchCommand((String ) options.get("-from")); //$NON-NLS-1$
 else if (cmd.equals("update")) //$NON-NLS-1$
 return new UpdateCommand(
                     (String ) options.get("-featureId"), //$NON-NLS-1$
 (String ) options.get("-version"), //$NON-NLS-1$
 (String ) options.get("-verifyOnly")); //$NON-NLS-1$
 else if (cmd.equals("mirror")) //$NON-NLS-1$
 return new MirrorCommand(
                     (String ) options.get("-featureId"), //$NON-NLS-1$
 (String ) options.get("-version"), //$NON-NLS-1$
 (String ) options.get("-from"), //$NON-NLS-1$
 (String ) options.get("-to"), //$NON-NLS-1$
 (String ) options.get("-mirrorURL"), //$NON-NLS-1$
 (String ) options.get("-ignoreMissingPlugins")); //$NON-NLS-1$
 else if (cmd.equals("uninstall")) //$NON-NLS-1$
 return new UninstallCommand(
                     (String ) options.get("-featureId"), //$NON-NLS-1$
 (String ) options.get("-version"), //$NON-NLS-1$
 (String ) options.get("-to"), //$NON-NLS-1$
 (String ) options.get("-verifyOnly")); //$NON-NLS-1$
 else if (cmd.equals("listFeatures")) //$NON-NLS-1$
 return new ListFeaturesCommand((String ) options.get("-from")); //$NON-NLS-1$
 else if (cmd.equals("addSite")) //$NON-NLS-1$
 return new AddSiteCommand((String ) options.get("-from")); //$NON-NLS-1$
 else if (cmd.equals("removeSite")) //$NON-NLS-1$
 return new RemoveSiteCommand((String ) options.get("-to")); //$NON-NLS-1$
 else
                 return null;
         } catch (Exception e) {
             StandaloneUpdateApplication.exceptionLogged();
             UpdateCore.log(e);
             return null;
         }
     }

 }

